God describes making a scum-filled pot of stew to represent filthiness and lewdness of Jerusalem, which God will destroy in his fury.
Then he kills Ezekiel's wife and tells him not to mourn her. He does this to show how God will soon kill the children of Israel with a sword and tells them not to mourn their deaths.
God goes on to describe (again) his plans for the various nations. He's going to kill them all in various ways, and then they will know that he is God.
The text and notes for this episode can be found here: https://skepticsannotatedbible.com/fewer-words/206.html
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